南海扩张的地震反射标志——南海东北部多道地震剖面结果
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摘要
南海的扩张、成因演化研究的成果主要基于深部速度研究及磁条带研究的基础上,但南海东北部边界的研究相对薄弱.本次通过对南海东北部边界的反射地震剖面973的综合研究,结合前人的天然地震震源研究及地质研究成果,得到南海形成与扩张是单方向向菲律宾吕宋岛弧—台湾岛地块漂移的结果.南海各块体处于一个统一的区域应力场作用之下,菲律宾吕宋岛弧—台湾岛地块限制了南海的扩张与发展;在此应力条件下,不同部位受力状态不同,就南海东北部973剖面地震波场特征,可划分为五个构造单元:AB段南海东北部大陆架张性盆地区;BC段大陆坡为伸展区,形成大量张性盆地;CD段中部深海沉积盆地为弱挤压区,深海沉积盆地弱变形,大陆坡张性盆地浅俯冲其下,深海沉积盆地西部翘起,向东倾斜;DE段东部为强挤压区,沉积盆地挤压变形,越向东挤压越强烈,深海沉积盆地浅俯冲其下,相对弱变形并西部翘起;E以东,菲律宾吕宋岛弧—台湾岛构造带为稳定地块.南海东北部在东或南东方向统一的区域应力场作用下,处于张性、弱挤压、强挤压不同压力状态,形成南海特有的由北西向东呈现拉张-弱挤压-强挤压构造格局,反射地震剖面上显示两个浅俯冲点.每个块体构造层呈手风琴风箱式折曲并向东聚敛,近菲律宾吕宋岛弧—台湾岛构造带其折曲更为严重,沉积盆地由西向东,展现为不同阶段的沉积盆地,发育、成长、结束、消亡,块体俯冲方向以及各块体的区域性倾伏方向均与区域应力场方向一致.
In this research, a comprehensive study of the 973 seismic profiles was conducted. Combined with previous studies of the geological and natural hypocenter, we proposed that the formation and expansion of the South China Sea is the result of the one-way drift to the Philippines Island of Luzon arc-Taiwan terrain. All the blocks of South China Sea are under the same regional stress field and its expansion and evolution were constrained by the Philippines island of Luzon arc-Taiwan terrain. Based on the stress conditions, and the characteristics of seismic wave field, five structural sections were distinguished in the 973 seismic profile of the northeastern South China Sea-. AB section is a stretching area of the continental shelf; BC section is the expanded area of the continental slope, with many pull-apart basins; CD section is the deep sedimentary basin with weak compression and deformation. The extensional basins of the continental slope subducted underneath this section shallowly. The western deep-sea sedimentary basins was elevated, and inclined eastward; DE section is a strongly compressed sedimentary basin zone with stronger squeezing in the eastern part. The weak-deformed deep-sea sedimentary basins subducted shallowly underneath this section, and were lifted up in the western region. The east of E is the tectonic belt of Luzon-Taiwan island arc, and is a steady rigidity block. Under the eastern or southeastern uniform stress field, the northeastern part of the South China Sea underwent different stress state and formed unique structure patterns in South China Sea: extensional-weak compressive-strong compressive from north-west to east. Two shallow subduction zones were recognized in the seismic profiles. All the tectonic blocks have accordion-folds-style structures and converged in the east, with stronger folding near the Philippine island of Luzon arc-Taiwan Island. From west to east sedimentary basins showed different stages of the basins development: growth, mature and terminations. Block subduction and regional block inclining directions were all aligned with the directions of the regional stress field.
引文
[1] Ludwig W J.Profile-sonobuoy measurement in the South China Sea basin. J. Geophy.s. Res.,1979. 84:3305-3518 [2] Taylor B, Hayes D E. The tectonic evolution of the South China Sea. In: Hayes D E. ed. Tectonic and Geological Evolution of Southeast Asia Seas and Tslands. [S.1. ]. America Geophysical Union, 1980
    [3] Taylor B, Hayes D E. Origin and history of the South China Sea basin. Hayes D E. Tectonic and Geological Evolution of South-east Asian Seas and Islands. [S.1] :America Gcophvsical Union, 1982
    [4] Briais A,Patriat P, Tapponier P. Updated interpretation of magnetic anomalies and seafloor spreading stages in the South China Sea: Implications for the Tertiary tectonics of Southeast Asia. J.Geophys. Res., 1993,98(B4) :6299-6328
    [5] 刘光鼎.中国海区及邻域地质地球物理特征.北京:科学出版社,1992 Liu G D.Geological and geophysical characteristics of China offshore and regional areas ( in Chinese). Beijing: Science Press,1992
    [6] Ru K, Pigott J D. Episodic rifting and subsidence in the South China Sea. Am. Assoc. Petroleum Geol. Bull. ,1986, 70:1136-1155
    [7] 姚伯初.南海海盆新生代的构造演化史.海洋地质与第四纪地质,1996,16(2) :1-13 Yao B C. Tectonic evolution of the South China Sea basin in Cenozoic. Marine Geology and Quaternary Geology ( in Chinese), 1996,16(2) : 1-13
    [8] 姚伯初,曾维军,Hayes D E,等.中美合作南海调研报告.武汉:中国地质大学出版社,1994 Yao B C, Zeng W J, Hayes D E,et al. Report on Sino-US Cooperative Investigationon the South China Sea ( in Chinese). Wuhan: China University of Geosciences Press,1994
    [9] 宋海斌,郝天珧,江为为等.南海地球物理特征与基底断裂体系研究.地球物理学进展,2002,17(1) :24-33 Song H B, Hao T Y, Jiang W W, et al. Researches on geophysical field characteristics and basement fault system of the South China Sea. Progress in Geophysics (in Chinese), 2002,17(1) :24-33
    [10] 谢建华,夏斌,张宴华等.南海形成演化探究.海洋科学进展,2005,23(2) :212-219 Xie J H, Xia B, Zhang Y H, et al. Study on formation and evolution of the South China Sea. Advances in Marine Science (in Chinese), 2005 ,23(2) :212-219
    [11] 张健,宋海斌,李家彪.南海西南海盆构造演化的热模拟究.地球物理学报,2005,48(6) :1357-1365 Zhang J, Song H B, Li J B. Thermal modeling of the tectonic evolution of the southwest subbasin in the South China Sea. Chinese J. Geophys. (in Chinese), 2005,48(6) :1357-1365
    [12] 郑勇,傅容珊,熊熊.中国大陆及周边地区现代岩石圈演化动力学模拟.地球物理学报,2006,49(2) :415-427 Zheng Y, Fu R S, Xiong X. Dynamic simulation of lithospheric evolution from the modern China mainland and its surrounding areas. Chinese J. Geophys. (in Chinese) , 2006, 49(2) :415-427
    [13] 邵磊,尤洪庆,郝沪军等.南海东北部中生界岩石学特征及沉积环境.地质论评,2007,53(2) :164-169 Shao L,You H Q,Hao H J,et al.Petrology and depositional environments of mesozoic strata in the northeastern South China Sea. Geological Review (in Chinese), 2007,53(2) :164-169
    [14] 龚铭,李唐根,吴业军等.南沙海域构造特征与盆地演化.武汉:中国地质大学出版社,2001 Gong M, Li T G, Wu Y J, et al. Structrual Features and Basin Evolution in Nansha Sea Area(in Chinese). Wuhan: China University of Geosciences Press, 2001
    [15] 肖龙,周海民,董月霞等.广东三水盆地火山岩:地球化学特征及成因--兼论火山岩性质的时空演化和南海形成的深部过程.大地构造与成矿学,2006,30(1) :72-81 Xiao L, Zhou H M, Dong Y X, et al. Geochemistry and petrogenesis of cenozoic volcanic rocks from sanshui basin; implications for spatial and temporal variation of rock types and constraints on the form ation of south China sea. Geotectonica et Metallogenia(in Chinese) ,2006,30(1) :72-81
    [16] 方念乔,姚伯初,万玲等.华南和南海北部陆缘岩石圈速度结构特征与沉积盆地成因.地球科学--中国地质大学学报,2007,32(2) :147-155 Fang N Q, Yao B C, Wan L, et al. The velocity structure of the lithosphere and the origin of sedimentary basins in the South China and northern margin of the South China Sea. Earth Science-Journal of China University of Geosciences (in Chinese),2007,32(2) :147-155
    [17] 姚伯初,王光宇.南海海盆在新生代的构造演化.南海地质研究,1991,3:9-23 Yao B C, Wang G Y. Tectonic evolution of South China Sea basin in Cenozoic.Geological Research of South China Sea (in Chinese), 1991,3:9-23
    [18] 高红芳,曾祥辉,刘振湖.南海礼乐盆地沉降史模拟及构造演化特征分析.大地构造与成矿学,2005,29(3) :385-390 Gao H F, Zeng X H, Liu Z H, et al.Simulating of subsidence history and analysis of tectonic evolutionary characteristics of liyue basin in South China Sea. Geotectonica et Metallogenia (in Chinese) ,2005,29(3) :385-390
    [19] 王有学,W D Mooney,韩果花等.台湾-阿尔泰地学断面阿尔金-龙门山剖面的地壳纵波速度结构.地球物理学报,2005,48(1) :98-105 Wang Y X, W D Mooney, Han G H, et al. Crustal P-wave velocity structure from Altyn Tagh to Longmen mountains along the Taiwan-Altay geoscience transect. Chinese J. Geophys. (in Chinese) , 2005, 48(1) :98-105
    [20] 王卫民,赵连锋,李娟等.1999年台湾集集地震震源破裂过程.地球物理学报,2005,48(1) :132-147 Wang W M, Zhao L F, Li J, et al. Rupture process of the Chi-Chi (Taiwan) earthquake in 1999. Chinese J, Geophys. (in Chinese), 2005, 48(1) : 132-147
    [21] 徐文耀,魏自刚,夏国辉.2000年中国地区地磁场长期变化的区域特征.地球物理学报,2005,48(3) :551-560 Xu W Y, Wei Z Z, Xia G H. Regional features of the secular variation of the geomagnetic field in China for 2000. ChineseJ. Geophys. (in Chinese), 2005, 48(3) :551-560
    [22] 高星,王卫民,姚振兴.中国及邻近地区地壳结构.地球物理学报,2005,48(3) :591-601 Gao X, Wang W M, Yao Z X. Crustal structure of China mainland and its adjacent regions. Chinese J. Geophys. (in Chinese), 2005, 48(3) : 591-601
    [23] 张国民,马宏生,王辉等.中国大陆活动地块边界带与强震活动.地球物理学报,2005,48(3) :602-610 Zhang G M, Ma H S, Wang H, et al. Boundaries between active-tectonic blocks and strong earthquakes in the China mainland. Chinese J. Geophys. (in Chinese), 2005, 48(3) : 602-610
    [24] 马宗晋,高祥林,宋正范.中国布格重力异常水平梯度图的判读和构造解释.地球物理学报,2006,49(1) :106-114 Ma Z J, Gao X L, Song Z F. Analysis and tectonic interpretation to the horizontal-gradient map calculated from Bouguer gravity data in the China mainland. ChineseJ. Geophys. (in Chinese) , 2006, 49(1) :106-114
    [25] 马瑾,陈顺云,刘培洵等.用卫星热红外信息研究关联断层活动的时空变化-以南北地震构造带为例.地球物理学报,2006,49(3) :816-823 Ma J, Chen S Y, Liu P X, et al. Temporal-spatial variations of associated faulting inferred from satellite infrared information: A case study of the N-S seismo-tectonic zone in China. Chinese J. Geophys. (in Chinese) , 2006, 49(3) :816-823
    [26] 陈顺云,刘培洵,刘力强等.地表热红外辐射的小波分析及其在现今构造活动研究中的意义.地球物理学报,2006,49 (3) :824-830 Chen S Y, Liu P X, Liu L Q, et al. Wavelet analysis of thermal infrared radiation of land surface and its implementation in the study of current tectonic activities. Chinese J. Geophys. (in Chinese) , 2006, 49(3) : 824-830
    [27] 胥颐,刘建华,郝天珧等.中国东部海域及邻区岩石层地幔的P波速度结构与构造分析.地球物理学报,2006,49(4) :1053-1061 Xu Y, Liu J H, Hao T Y, et al. P wave velocity structure and tectonics analysis of lithospheric mantle in eastern China seas and adjacent regions. Chinese J. Geophys. ( in Chinese), 2006, 49(4) :1053-1061
    [28] 袁玉松,马永生,胡圣标等.中国南方现今地热特征.地球物理学报,2006,49(4) :1118-1126 Yuan Y S, Ma Y S, Hu S B, et al. Present-day geothermal characteristics in South China. Chinese J. Geophys. (in Chinese), 2006, 49(4) :1118-1126
    [29] 嘉世旭,李志雄,徐朝繁等.雷琼拗陷地壳结构特征.地球物理学报,2006,49(5) :1385-1394 Jia S X, Li Z X, Xu Z F, et al. Crustal structure features of the Leiqiong depression in Hainan Province. Chinese J. Geophys. (in Chinese), 2006, 49(5) : 1385-1394
    [30] 丘学林,曾钢平,胥颐等.南海西沙石岛地震台下的地壳结构研究.地球物理学报,2006,49(6) :1720-1729 Qiu X L, Zeng G P, Xu Y, et al. The crustal structure beneath the Shidao Station on Xisha Islands of South China Sea. Chinese J. Geophys. (in Chinese), 2006, 49(6) :1720-1729
    [31] 刘建华,胥颐,郝天珧等.中国边缘海及邻区地壳和上地幔速度结构特征.地球物理学进展,2005,20(3) :594-599 Liu J H, Xu Y, Hao T Y, et al. Three dimensional velocity structure feature in the crust and upper mantle beneath Chinese marginal seas and adjacent regions. Progress in Geophysics (in Chinese), 2005,20(3) :594-599
    [32] 李官保,裴彦良,刘保华.海底热流探测技术综述.地球物理学进展,2005,20(3) :611-619 Li G B, Pei Y L, Liu B H. Review of measurement techniques of seafloor heat flow. Progress in Geophysics (in Chinese), 2005,20(3) :611-619
    [33] 刘展,赵文举,吴时国等.冲绳海槽南部基底构造特征.地球物理学进展,2006,21(3) :814-824 Liu Z, Zhao W J, Wu S G, et al. The basement tectonics in south of the Okinawa trough. Progress in Geophysics (in Chinese), 2006,21(3) :814-824
    [34] 张瑞青,李永华,姚雪绒.西北太平洋俯冲带东北地区壳幔结构研究进展.地球物理学进展,2006,21(4) :1080-1085 Zhang R Q, Li Y H, Yao X R. A review of latest crustal and upper mantle discontinuities studies beneath northeast China in northwest Pacific subduction zone. Progress in Geophysics (in Chinese) , 2006 ,21(4) :1080-1085
    [35] 刘展,孙鲁平,范丰鑫等.冲绳海槽北部基底构造特征.地球物理学进展,2006,21(4) :1086-1092 Liu Z, Sun L P, Fan F X, et al. The basement tectonics in north of the Okinawa trough. Progress in Geophysics (in Chinese), 2006 ,21(4) :1086-1092
    [36] 谢富仁,陈群策,崔效锋等.中国大陆地壳应力环境基础数据库.地球物理学进展,2007,22(1) :131-136 Xie F R, Chen Q C, Cui X F, et al. Fundamental database of crustal stress environment in continental China. Progress in Geophysics (in Chinese), 2007,22(1) :131-136
    [37] 陈洁.潮汕坳陷地球物理特征及油气勘探潜力.地球物理学进展,2007,22(1) :147-155 Chen J. Geophysical characteristics of the Chaoshan depression and its hydrocarbon exploration potential. Progress in Geophysics (in Chinese) , 2007,22(1) :147-155
    [38] 孙龙涛,孙珍,詹文欢等.南海西部断裂系研究及其物理模拟实验证据.海洋学报,2006,28(3) :64-72 Sun L T, Sun Z, Zhan W H, et al. Western fault zone of South China Sea and its physical simulation evidences. Ada Oceanologica Sinica(in Chinese), 2006,28(3) :64-72
    [39] 姚伯初,邱燕,李唐根.南海西缘-万安断裂的走滑特征及其构造意义.南海西部海域地质构造特征和新生代沉积.北京:地质出版社,1999. 45-55 Yao B C, Qiu Y, Li T G. The Strike-slip Characters of the Western Margin of the South China Sea-Wanan Fault and Its Tectonic Significances (in Chinese) , Beijing: Geological Publishing House, 1999. 45-55
    [40] 吴世敏,周蒂,刘海龄.南沙地块构造格局及其演化特征.大地构造与成矿学,2004,28(1) :23-28 Wu S M, Zhou D, Liu H L. Tectonic framework and evolutionary characteristics of Nansha Block, South China Sea. Geotectonica et Metallogenia (in Chinese), 2004, 28 (1) :23-28
    [41] 吕文正.南海中央海盆条带磁异常特征及构造演化.海洋学报,1987,9(1) :69-78 Lu W Z. Characteristics of magnetic anomalies of central basin and tectonic evolution of the South China Sea. Acta Oceanologica Sinica(in Chinese),1987,9(1) :69-78
    [42] 魏荣强,臧绍先.大陆岩石圈流变结构研究进展及存在问题.地球物理学进展,2007,22(2) :359-364 Wei R Q, Zang S X. Progresses and problems in the study of the rheological structure of the continental lithosphere. Progress in Geophysics (in Chinese), 2007,22(2) :359-364
    [43] 刘迎春,刘海龄,张健.南海中央海盆岩石圈纵向演化模拟.海洋地质与第四纪地质,2005,25(4) :47-54 Liu Y C, Liu H L, Zhang J. A Vertical evolution of lithosphere of the central basin of south China sea. Marine Geology and Quaternary Geology (in Chinese),2005,25(4) :47-54
    [44] 周蒂,吴世敏,陈汉宗.南沙海区及邻区构造演化动力学的若干问题.大地构造与成矿学,2005,29(3) :339-345 Zhou D, Wu S M, Chen Z H. Some remarks on the tectonic evolution of nansha and its adjacent regions in southern south China sea. Geotectonica et Metallogenia (in Chinese) , 2005, 29(3) :339-345
    [45] 刘绍文,施小斌,王良书等.南海成因机制及北部岩石圈热流变结构研究进展.海洋地质与第四纪地质,2006,26(4) :116-124 Liu S W, Shi X B, Wang L S, et al. Recent advances in studies on the formation mechanism of the south china sea and thermo-rheological structure of lithosphere in its northern margin; an overview. Marine Geology and Quaternary Geology (in Chinese), 2006,26(4) :116-124
    [46] 詹文欢,钟建强,丘学林.南海及邻区现代构造应力场与形成演化.北京:科学出版社,1993 Zhan W H, Zhong J Q, Qiu X L. Numerical Simulation of theRecent Tectonic Stress Field in South China Sea and Adjacent Areas(in Chinese). Beijing: Science Press, 1993
    [47] 詹艳,王继军,汤吉等.利用卫星探测研究地下结构.地球物理学进展,2007,22(3) :702-707 Zhan Y, Wang J J, Tang J, et al. Study on underground structure by using Satellite. Progress in Geophysics (in J., 2007,22(2) :702-707
    [48] 赵明辉,丘学林,叶春明等.南海东北部海陆深地震联测与滨海断裂带两侧地壳结构分析.地球物理学报,2004,47(5) :845-852 Zhao M H, Qiu X L, Ye C M, et al. Analysis on deep crustal structure along the onshore offshore seismic profile across the Binhai (Littoral) Fault Zone in northeastern South China Sea. Chinese J. Geophys(in Chinese),2004,47(5) :845-852
    [49] 郑斯华,孙新蕾,宋晓东.利用中国地震台网(CSN)记录到的PKP波研究中太平洋下地幔底部的小尺度P波速度变化.地 球物理学报,2007,50(1) :184-192 Zheng S H, Sun X L, Song X D. Fine structure of P-wave velocity variations underneath the Central Pacific from PKP waves recorded at the China Seismic Network (CSN) . Chinese J. Geophys. (in Chinese) , 2007, 50(1) :184-192
    [50] 彭艳菊,黄忠贤,苏伟等.中国大陆及邻区海域地壳上地幔各向异性研究.地球物理学报,2007,50(3) :751-759 Peng Y J, Huang Z X, Su W, et al. Anisotropy in crust and upper mantle beneath China continent and its adjacent seas. Chinese J. Geophys. (inChinese), 2007, 50(3) :752-759
    [51] 丁巍伟,程晓敢,陈汉林等.台湾增生楔的构造单元划分及其变形特征.热带海洋学报,2005,5:53-60 Ding W W, Cheng X M, Chen H L, et al. Geological characteristics and tectonic mechanism of Taiwan accretionary prism. Journal of Tropical Oceanography (in Chinese), 2005,5:53-60
    [52] 丁巍伟,杨树锋,陈汉林等.台湾岛以南海域新近纪的弧-陆碰撞造山作用.地质科学,2006,41(2) :195-201 Ding W W, Yang S F, Chen H L, et al. Arc-continent collision orogeny in offshore Taiwan during neogene. Chinese Journal of Geology (in Chinese) ,2006,41(2) :195-201
    [53] 丁巍伟,王渝明,陈汉林等.台西南盆地构造特征与演化.浙江大学学报(理学版),2004,31(2) :216-220 Ding W W, Wang Y M, Cheng H L, et al. Deformation characters and its tectonic evolution of the Southwest Taiwan Basin. Journal of Zhejiang University (Sciences Edition) (in Chinese), 2004,31(2) :216-220

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